rnd gen

#include <iostream>
#include <ctime>
using namespace std;

void main()
{
    int arr[10];
    srand(time(NULL));
    for (int i = 0; i < 10; i++)
    {
        if (i == 0) arr[i] = rand() % 15;
        else
        {
            tip:
            arr[i] = rand() % 10;
            for (int j = i; j > 0; j--)
            {
                if (arr[i] == arr[j-1])
                    goto tip;
            }
        }
    }
    for (int i = 0; i < 10; i++)
    {
        cout << arr[i] << ' ';
    }
    cout << endl;
}